Former Vice President Joe BidenJoe BidenPfizer CEO says vaccine data for those under 5 could be available by end of year Omicron coronavirus variant found in at least 10 states Photos of the Week: Schumer, ASU protest and sea turtles MORE (D) holds a narrow lead in Iowa just days ahead of the state's caucuses, according to a poll released Sunday.
A USA Today/Suffolk University survey of likely caucusgoers found Biden in the lead with 25 percent of respondents indicating that they will support him, while Sen. Bernie SandersBernie SandersOvernight Health Care — Presented by March of Dimes — Abortion access for 65M women at stake Hospitals in underserved communities face huge cuts in reckless 'Build Back Better' plan Sanders urges Biden to delay Medicare premium hike linked to Alzheimer's drug MORE (I-Vt.) and former South Bend, Ind., Mayor Pete ButtigiegPete ButtigiegThe Hill's Morning Report - Presented by Facebook - Congress avoids shutdown Harris's office undergoes difficult reset The Hill's 12:30 Report: Biden to announce increased measures for omicron MORE (D) trailed at 19 percent and 18 percent in the poll, respectively.
Sen. Elizabeth WarrenElizabeth WarrenWarren calls on big banks to follow Capital One in ditching overdraft fees Crypto firm top executives to testify before Congress Massachusetts Gov. Charlie Baker won't seek reelection MORE (D-Mass.), who has also battled among the top tier in Iowa, sat at 13 percent in the poll, the same percentage of likely caucusgoers who told pollsters that they were currently undecided.
Another 45 percent remain uncommitted to their top choice, meaning that any of the top candidates could see significant gains or drops in their support levels before next week's caucuses.
No other candidates registered above 6 percent support in the poll, suggesting a clear divide between the top four candidates and the remainder of the Democratic field in the first-in-the-nation caucus state.
USA Today/Suffolk University's poll surveyed 500 likely caucusgoers by landline and cell phones between Jan. 23-26. The margin of error is 4.4 percentage points.